<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
    <style>
      .wrap {
        display: flex;
        /* justify-content: center; */
        /* align-items: center; */
        width: 500px;
        height: 500px;
        background-color: antiquewhite;
      }
      .wrap > div {
        width: 100px;
        height: 100px;
        margin: auto;
        align-self: center;
        background-color: blueviolet;
      }
      .wrap1 {
        width: 200px;
        height: 200px;
        background-color: #cecece;
        /* vertical-align: middle; */
      }
      .wrap1 > span:nth-of-type(1) {
        font-size: 20px;
        /* vertical-align: middle; */
      }
      .wrap1 > span:nth-of-type(2) {
        font-size: 10px;
        vertical-align: middle;
      }
    </style>
  </head>
  <body>
    <div class="wrap">
      <div></div>
      <div></div>
    </div>
    <div class="wrap1"><span>你好</span> <span>wu~</span></div>
  </body>
</html>
